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Finding the Fourth Proportional to 52,387.94, 72,379.90 and 36,543.12

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Solution

The fourth proportional to 52,387.94, 72,379.90 and 36,543.12 is: 50,488.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,387.94 : 72,379.90 = 36,543.12 : x
  2. Step 2: Convert to fraction form
    52,387.94/72,379.90 = 36,543.12/x
  3. Step 3: Cross multiply
    52,387.94x = 72,379.90 × 36,543.12
  4. Step 4: Simplify right side
    52,387.94x = 2,644,987,371.29
  5. Step 5: Solve for x
    x = 2,644,987,371.29/52,387.94
  6. Step 6: Final answer
    x = 50,488.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.